1. Check the oxidation degree: When purchasing, you can lightly scratch the surface of the profile to see if the oxide film on its surface can be wiped off. Of course, this should not be done directly on the sample window. The owner can perform this operation on the material displayed by the merchant.
2. Check the chroma: The color of the same aluminum alloy profile should be consistent. If there is a noticeable color difference, it is not advisable to purchase. Generally, the cross-section of normal aluminum alloy profiles is silver-white and has a uniform texture. If the color is dark, it can be determined to be made from recycled aluminum or waste aluminum that has been forged in a furnace.
3. Check for flatness: Inspect the surface of aluminum alloy profiles to ensure there are no dents or bulges. Aluminum profiles produced by reputable manufacturers should have a smooth and shiny surface. If the profile is from a small workshop, due to issues with machinery or raw materials, the surface may exhibit minor irregularities. Such aluminum alloy profiles are prone to oxidization and deformation in the later stages of use as balcony windows.
4. Check the strength: When purchasing, you can bend the profile moderately with your hand. If the profile can be bent without much effort, it can be concluded that the strength of the aluminum profile does not meet the standard. In addition, the strength of the profile is not necessarily the harder the better. Aluminum has a certain degree of toughness and is not a hard material. This characteristic allows it to be forged into different shapes. Therefore, when purchasing, homeowners need to pay close attention to the brand and observe carefully.
5. Check the thickness: Commonly used aluminum window profiles of the 70 and 90 series should have a wall thickness of 1.2-2.0 millimeters. The national standard for the wall thickness of balcony window aluminum profiles is 1.2mm. Lumengchuang's balcony window profiles have a wall thickness of 1.4-1.6mm, and the heavy parts of the upper and lower beams of frameless windows are thicker, reaching 3-4mm, far exceeding the national standard.
6. Glossiness: When purchasing aluminum alloy doors and windows, avoid selecting profiles with obvious defects such as open bubbles, ash residue, cracks, burrs, and peeling on the surface. If any of the above phenomena are present, it can be concluded that the material has been recycled or processed from scrap aluminum. Due to the uneven texture and disordered alloy composition, such materials are prone to cracking and oxidation in the later stages.
There are many types of industrial aluminum profiles. The raw material of aluminum profiles is aluminum alloy, which consists of aluminum and various other elements such as magnesium, silicon, manganese, zinc, copper, and titanium. Currently, the materials of industrial aluminum profiles available in the market are roughly classified as follows: aluminum profiles, industrial aluminum profiles, and aluminum profile manufacturers
1. Aluminum profiles of the 2-series are widely used in ** fields and wheel components, such as 2024 aluminum profiles, which mainly include grades such as 2011, 2014, 2017, and 2024.
Secondly, the aluminum profiles of the 5 series can be divided into 5005 and 5050. The 5 series aluminum profiles are characterized by good welding performance and high structural strength, and can be used for pressure vessels, etc. The main types include 5052, 5056, 5054, etc.
Thirdly, 6-series aluminum materials are widely used, with 6063, 6061, and 6005 series being particularly popular due to their good machinability, good surface treatment, high hardness, and other characteristics, which make them suitable for use in industries such as industrial structures and electronic enclosures.
Fourth, the aluminum material of the 7 series is the "top-notch" among aluminum profiles, used in automobiles, ships, aviation, aerospace materials, chemical equipment, mechanical parts, and decorative materials for buildings. The main types include: 7003, 7005, 7075, etc.
Therefore, the application scopes of different industrial aluminum profiles vary greatly, and solutions are tailored according to the characteristics and requirements of the products. With the development of market demand and technological progress, I believe more aluminum alloy materials will be developed in the future.